Animal Hookworms and Trichostrongylus Flashcards
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
(Cat) Hookworm
People would accidentally get the infection by:
○ Walking barefoot
○ Areas where there is improper sanitation of waste matter of pets
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
Life cycle will not completely develop in ______
humans
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
only ____ stages are recovered found underneath
the skin of humans
larval
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
dog
Caninum
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
3 pairs of teeth
Caninum
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
big buccal cavity
Caninum
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
cat
Braziliense
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
2 pairs of teeth
Braziliense
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
smallest in size
Braziliense
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
Pathology:
- CLM
- Patient would experience redness & itchiness at the site of penetration
- L3 Larva can be found underneath the skin
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
CLM meaning
Cutaneous Larva Migrans or Creeping
eruption
Ancylostoma caninum (Dog) and Ancylostoma Braziliense
Diagnosis:
- stool examination is not appropriate
- Biopsy
- Serological testing
Sizes of different Hookworms:
- Ancylostoma caninum (biggest)
- Ancylostoma duodenale
- Necator americanus
- Ancylostoma Braziliense (smallest)
1 pair of teeth
Ancylostoma ceylanicum
Animal parasite that can completely develop in
humans
Ancylostoma ceylanicum
Related to hookworms
Trichostrongylus
Trichostrongylus
Final Host
Herbivores (like cattles, sheep)
Trichostrongylus
accidental host,
man
Similar to hookworms; but no heart lung migration
Trichostrongylus
Hookworm vs. Trichostronglylus Egg
Smaller
Hookworm
Hookworm vs. Trichostronglylus Egg
Rounded
Hookworm
Hookworm vs. Trichostronglylus Egg
Elongated & larger
Trichostrongylus
Hookworm vs. Trichostronglylus Egg
Has a pointed end
Trichostrongylus
Animal Ascarids:
Toxocara cati & Toxocara canis
Toxocara Cati
Final Host
Cat
Toxocara Canis
Final Host
Dog
Animal Ascarids
Accidental Host
Humans
Animal Ascarids
MOT
Ingestion of Embryonated Eggs
Animal Ascarids
Only ____ stages will be recovered in
humans
larval
Animal Ascarids
Larval stages found in different _______
visceral
organs
Animal Ascarids
Disease:
Visceral Larva Migrans
Animal Ascarids
After ingestion of embryonated egg, the larva will be released and develop up to the ______
Visceral Larva Migrans
L2 larval stage
Animal Ascarids
L2 larval stage can _____ (embedded into
the tissue)
Visceral Larva Migrans
encyst
Animal Ascarids
Other disease associations:
○ Ocular Larval Migrans (OLM)
○ Covert toxocariasis - Hidden
Animal Ascarids
affects the
eyes
Other disease associations:
Ocular Larval Migrans (OLM)
Animal Ascarids
Hidden
Other disease associations:
Covert toxocariasis
Animal Ascarids
_____ usually affected
Children
Animal Ascarids: Diagnosis
● Antigen detection and molecular methods
● Detection of larva (biopsy)
● ELISA
● Molecular methods
● Patients also have elevated levels of eosinophils
Animal Ascarids: Diagnosis
(Detection of Ab such as IgG) using Toxocara excretory antigens
ELISA
Animal Ascarids: Treatment
● Albendazole
● Mebendazole
● together with anti-inflammatory medications